Specifications include, but are not limited to: The Advanced Photoelectron Core Facility at the University of Tennessee Knoxville needs two bellow-sealed linear translator manipulators. This instrument is based on an X-ray Photoelectron spectrometer, installed on an ultra-high vacuum chamber with a base pressure better than 5x10-11 mbar. The two translators will be used to improve flexibility of operation and implement the experimental techniques already available at the facility. The first linear translator will be used to retract and valve off the X-ray source so to allow maintenance without venting the whole chamber and reducing the down time. The second translator will be used to finely position the electron spectrometer so that the focus of the analyzer will perfectly coincide with the geometrical center of the analysis chamber. Satisfying this condition will allow the possibility of carrying out experiments of photoelectron diffraction, a powerful technique to study the local order in thin films and interfaces. For this purpose the linear translator that will be mounted on the electron spectrometer will need to allow a tilt adjustment of about ±4deg. These are the specifics required for the two linear translators. Item 1 (Photoelectron Spectrometer). UHV compatible. 50mm linear travel, only z direction. Top flange tilt adjustable ±4deg. Edge welded bellow with 150mm (8”) clear ID DN 150 (8”) CF flanges 150 mm (8”). Top flange tapped metric, bottom flange clearance holes. Manual drive. Metric scale. Horizontal mounting compatible. Item 2 (Xray source) UHV compatible. 150 mm or 6 inch Z travel. ± 12 mm (0.5 inch) XY travel. Edge welded bellow, 38 mm clearance ID. DN 38 (2.75”) CF top and bottom flanges. Top flange tapped mm, bottom flange clearance holes. Manual drive. Metric scales. Horizontal mounting compatible. Lead time will also be determinant for the bid.
